| 摘要 |
PURPOSE:To improve the operability and to reduce cost by switching an input electrical signal by a first switch circuit to input it, and switching an output electrical signal by a second switch circuit to output it. CONSTITUTION:In the titled transmitter which executes two-way multiplex transmission of optical signals using a single beam fiber, the switch circuits 30-11, 20-12 20-21, 30-22 are switched by using two pieces of optical transmitters 20-1, 20-2 of the same constitution and the single beam fiber 21. Accordingly, optical signals of wavelengths lambda1, lambda2 can be multiplex-transmitted in both directions, hence the optical transmitters 20-1, 20-2 have interchangeability with each other, and only one kind is required. As result, the operability can be improved and the cost can be reduced. Also, by containing the components of the transmitters 20-1, 22-2 respectively in one module, the respective transmitters 20-1, 20-2 can be miniaturized. |
